zbar-code128

we created a bar code with name zbarcode for smart with code128 with details

TDBCSIZE 50.00 MM

TDBCHEIGT 20.00 TDBCHEIGTU MM

TDBARCTYPE BRLC

TDBARCAUX N06 00150A

we are having scanning problem for data. (data is 10 digit number ).

scanner is not scanning all data.

Is it true that size of barcode effect the scanning.

Can we change the size of zbar -code128 .

If we change the size of barcode, then all data can become scanable ?

Thanks